The heat pump is suitable for higher building heat loads between 17 and 22 kW. It delivers heat and DHW up to 65°C. It can be optionally configured for passive cooling. It uses patented OCHSNER stainless steel shell and tube heat exchangers, which offer maximum reliability even when water quality is lower. The slimline indoor unit has a footprint of less than half a square metre. The AQUA 22 can be cascaded for higher output demands.

Energy efficient
Climate zone (middle)
Energy efficiency class (D to A+++)
P rated
22 kW
Efficiency ETAs
253,0 %
Useable for
  • Detached and two-family houses
  • Apartment and commercial buildings
  • Underfloor heating
  • Radiators up to 60°C
Max. flow temp. 65°C
OTE controller

Features and options

OTE home climate manager

With its OTE home climate manager, OCHSNER focuses on intelligent, user friendliness for the control of your heat pump system

Also efficient when combined with radiators

As heat pumps in this series achieve flow temperatures of 65°C as standard, they also work in conjunction with radiators

Shell and tube heat exchanger for increased reliability

For greater robustness when water is the heat source, OCHSNER offers a special series based on 

OCHSNER groundwater heat pumps

OCHSNER groundwater heat pumps feature maximum efficiency and durability. Essential requirements are access to groundwater and the relevant permits.

To overview